Theft alarm



FIG. 1 is a perspective side view of a theft alarm according to an embodiment of the present invention;

FIG. 2 is a perspective top view of the theft alarm of FIG. 1;

FIG. 3 is a side view of the theft alarm of FIG. 1; and,

FIG. 4 is a perspective bottom view of the theft alarm of FIG. 1. 

The ornamental design for a theft alarm, as shown and described. 